Toilet stool



FIG. 1 is a perspective view of a toliet stool, showing my new design;

FIG. 2 is a right side elevation view thereof, the left-side elevational view being a mirror image thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken lines showing structural ribbing in FIG. 6 depict environmental matter and form no part of the claimed design. 

We claim the ornamental design for a toliet stool, as shown and described. 